Slay the Spire 2 Patch Notes and Changelog Hub
Every major update through 0.107.1
TL;DR: where the game stands right now
The current main-branch release is v0.107.1, "Major Update #2," shipped June 19, 2026. It rolls four beta patches (v0.104.0 through v0.107.0) plus two hotfixes into the stable branch in one drop. The headline: item:doormaker is gone as the Act 3 boss, replaced by a new fight, Aeonglass. Three things land for every player no matter which branch you run: an RNG rework that kills a seed-correlation exploit, official Steam Workshop support, and the Bestiary compendium. Underneath that sit 60-plus balance changes across all five characters. If you have been away since the last major update, this is the patch that resets the meta.
What changed in v0.107.1
Aeonglass takes over Act 3
This is the change that reshapes deckbuilding the most. Doormaker was retired because the fight pushed past the complexity Mega Crit wanted to maintain and carried lingering issues. In its place, Aeonglass runs on a damage-race timer. Its damage scales nonlinearly once a fight drags past roughly turn 10 to 12, and it feeds you Wither cards through the Withering Presence loop. Leave a Wither card in hand at end of turn and it bites you, and the cards get nastier the longer you stall.
The practical takeaway: a pure block-and-stall plan now loses to the clock. Every class needs a real scaling-damage line drafted by Act 3. The fight was tuned hard across the beta cycle, including a Wither rework in v0.106.0 and a v0.106.1 fix that stops Wither from being upgraded or held with item:runic-pyramid. Our Act 3 boss relic guide covers how to draft into the new fight.
tool:combat-simulator
Three features for everyone
The RNG rework is the most important fix for serious runners. The game seeds several separate generators (deck draw, combat rewards, event choices) from one run seed, and a flaw let players predict one generator's output from an unrelated one. The clearest abuse was item:neows-bones: its Curse correlated with the Act 1 roll, so memorized tables let you dodge the downside. Seed generation now keeps the generators genuinely independent. Mega Crit's line: "Rest assured that your suffering is now truly random."
Steam Workshop is live, so mods install directly and sync across your devices. The Bestiary logs every monster you have fought along with its moves and animations. Beta testers have had it since v0.105.0.
Card and relic changes worth knowing
A name change returning players will hunt for: item:silent's Follow Through is now called Scare, and its rarity moved from Common to Uncommon. Beyond that, the balance pass touched every character. A few that move the needle:
| Character | Change |
|---|---|
| Ironclad | Conflagration reworked to hit all enemies; Unrelenting 12(18) to 14(20) |
| Silent | Scare (ex-Follow Through) bumped to Uncommon; Pounce 12(18) to 14(20) |
| Regent | Astral Pulse retuned 14(18) to 6(8)x2; Crescent Spear base 6 to 8 |
| Necrobinder | Death March 3(4) to 4(6); Sic 'Em summon 2(3) to 3(4) |
| Defect | Shatter now Evokes all Orbs twice at 7(11); Hyperbeam 26(34) to 28(36) |
On relics, three new Neow options arrived: Kaleidoscope (gain 2 card rewards with cards from other characters on pickup), Fishing Rod (Upgrade a random card every 3 normal combats), and Silken Tress (Enchant the first reward's cards with Glam, lose all gold on pickup). Tezcatara's item:pumpkin-candle now extinguishes after 5 combats and can be re-lit at rest sites rather than dying at the start of Act 3.
How the patch system works
The game runs two branches: main (stable) and an opt-in beta. Beta gets changes on a bi-weekly cadence, and every so often a Major Update consolidates a batch of beta patches into main all at once. That is exactly what v0.107.1 did. Major Update #1 was v0.103.2 back on April 16, with a small bugfix-only main patch (v0.103.3) slotted in on May 29 between the two.
If you are unsure whether you are current, the number to check is v0.107.1 on main. Anything lower means you are missing Aeonglass and the RNG fix.
Changelog timeline
| Date | Version | Highlight |
|---|---|---|
| 2026-03-05 | v0.98.1 | Early access launch, day-one hotfix |
| 2026-03-19 | v0.100.0 | Infinite-combo nerf patch; Phobia Mode |
| 2026-04-02 | v0.102.0 | Badges system; Inflation modifier at Ascension 6 |
| 2026-04-16 | v0.103.2 | Major Update #1 (main) |
| 2026-05-07 | v0.105.0 | Aeonglass replaces Doormaker; Bestiary; bi-weekly cadence (beta) |
| 2026-05-29 | v0.103.3 | Bugfix-only main patch |
| 2026-06-19 | v0.107.1 | Major Update #2 (current main) |
What it means for the meta
Aeonglass changes the calculus for every character: scaling damage is no longer optional by Act 3, and stall-heavy archetypes pay for it. Community win-rate tracking gathered after the update puts item:silent on top and item:defect at the bottom, with the three middle classes clustered close together. Treat that as the early read while the field settles, not a verdict. The deck-archetype shift is the real story here, and we will keep the calculators tuned to v0.107.1 as the numbers shake out. For the current rankings see our meta snapshot, and for the two ends of the field the Silent sly discard build and the Defect frost tank build show how each class drafts its scaling line.
tool:deck-evaluator
build:a8c8e15e42c2
build:304433a90186